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Fix ISSUE #706 The color of CMYK pixel format pictures is incorrect. #707

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Fix ISSUE #706 The color of CMYK pixel format pictures is incorrect. #707

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8 changes: 4 additions & 4 deletions src/jpegcodec.c
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Original file line number Diff line number Diff line change
Expand Up @@ -449,13 +449,13 @@ gdip_load_jpeg_image_internal (struct jpeg_source_mgr *src, GpImage **image)
/* Adobe photoshop seems to have a bug and inverts the CMYK data.
* We might need to remove this check, if Adobe decides to fix it. */
if (cinfo.saw_Adobe_marker) {
b = (k * c) / 255;
r = (k * c) / 255;
g = (k * m) / 255;
r = (k * y) / 255;
b = (k * y) / 255;
} else {
b = (255 - k) * (255 - c) / 255;
r = (255 - k) * (255 - c) / 255;
g = (255 - k) * (255 - m) / 255;
r = (255 - k) * (255 - y) / 255;
b = (255 - k) * (255 - y) / 255;
}

set_pixel_bgra(lineptr, 0, b, g, r, 0xff);
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